<mat-form-field>
    <mat-label>{{label}}</mat-label>
    <input matInput [value]="(value || 'material.accelerator.unbound') | translate" [disabled]="!recording" (keydown)="onKeydown($event)" #input>
    <button matSuffix mat-button (click)="onKeyboardClick(input)">
        <mat-icon> keyboard </mat-icon>
    </button>
</mat-form-field>